15566036340 has 48 divisors (see below), whose sum is σ = 43595701632. Its totient is φ = 4149914496.

The previous prime is 15566036327. The next prime is 15566036341. The reversal of 15566036340 is 4363066551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15566036341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229642 + ... + 289598.

It is an arithmetic number, because the mean of its divisors is an integer number (908243784).

Almost surely, 2^15566036340 is an apocalyptic number.

15566036340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15566036340 is an abundant number, since it is smaller than the sum of its proper divisors (28029665292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15566036340 is a wasteful number, since it uses less digits than its factorization.

15566036340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64296 (or 64294 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 15566036340 in words is "fifteen billion, five hundred sixty-six million, thirty-six thousand, three hundred forty".